This patch is reorganizing the code to split `get_processor_features()` into multiple helper functions. Details are present in the issue https://bugs.openjdk.org/browse/JDK-8380448. It should not change the behavior of any VM flag, except `UseVectorizedHashCodeIntrinsic`. The earlier code always set `UseVectorizedHashCodeIntrinsic` to `true` if UseAVX >= 2. That means specifying `-XX:-UseVectorizedHashCodeIntrinsic` on command line wouldn't disable use of this intrinsic. This looks like a bug and has been fixed in this patch.
--------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - Minor updates - 8380448: Split VM_Version::get_processor_features() in vm_version_x86.cpp into multiple helper routines Changes: https://git.openjdk.org/jdk/pull/31301/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=31301&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8380448 Stats: 1040 lines in 4 files changed: 393 ins; 392 del; 255 mod Patch: https://git.openjdk.org/jdk/pull/31301.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/31301/head:pull/31301 PR: https://git.openjdk.org/jdk/pull/31301
